/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/locks/test_locks_6.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 01:58:09,060 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-08-19 01:58:09,103 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 01:58:09,112 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 01:58:09,115 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 01:58:09,119 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 01:58:09,121 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 01:58:09,124 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 01:58:09,125 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 01:58:09,126 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 01:58:09,127 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 01:58:09,129 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 01:58:09,132 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 01:58:09,133 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 01:58:09,135 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 01:58:09,136 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 01:58:09,137 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 01:58:09,146 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 01:58:09,148 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 01:58:09,149 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 01:58:09,150 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 01:58:09,150 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 01:58:09,163 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 01:58:09,170 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 01:58:09,171 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 01:58:09,172 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 01:58:09,172 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 01:58:09,197 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 01:58:09,197 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 01:58:09,199 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 01:58:09,199 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 01:58:09,199 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 01:58:09,199 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 01:58:09,200 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 01:58:09,200 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 01:58:09,200 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 01:58:09,200 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 01:58:09,200 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 01:58:09,201 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 01:58:09,201 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 01:58:09,201 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 01:58:09,201 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 01:58:09,201 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 01:58:09,201 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 01:58:09,202 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 01:58:09,202 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 01:58:09,202 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 01:58:09,202 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 01:58:09,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:58:09,203 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 01:58:09,203 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 01:58:09,203 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 01:58:09,203 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 01:58:09,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 01:58:09,204 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 01:58:09,204 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 01:58:09,204 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; [2020-08-19 01:58:09,542 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 01:58:09,566 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 01:58:09,573 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 01:58:09,575 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 01:58:09,576 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 01:58:09,577 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_6.c [2020-08-19 01:58:09,645 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1b23ce8c/795eab2f10cc4baba3f3028e9bd0c576/FLAGf21c76d3b [2020-08-19 01:58:10,063 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 01:58:10,064 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_6.c [2020-08-19 01:58:10,076 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1b23ce8c/795eab2f10cc4baba3f3028e9bd0c576/FLAGf21c76d3b [2020-08-19 01:58:10,511 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1b23ce8c/795eab2f10cc4baba3f3028e9bd0c576 [2020-08-19 01:58:10,520 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 01:58:10,521 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 01:58:10,523 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 01:58:10,523 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 01:58:10,529 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 01:58:10,530 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:58:10" (1/1) ... [2020-08-19 01:58:10,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cbeb4c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:58:10, skipping insertion in model container [2020-08-19 01:58:10,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:58:10" (1/1) ... [2020-08-19 01:58:10,543 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 01:58:10,566 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 01:58:10,749 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:58:10,753 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 01:58:10,773 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:58:10,785 INFO L208 MainTranslator]: Completed translation [2020-08-19 01:58:10,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:58:10 WrapperNode [2020-08-19 01:58:10,786 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 01:58:10,787 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 01:58:10,787 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 01:58:10,787 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 01:58:10,797 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:58:10" (1/1) ... [2020-08-19 01:58:10,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:58:10" (1/1) ... [2020-08-19 01:58:10,887 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:58:10" (1/1) ... [2020-08-19 01:58:10,888 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:58:10" (1/1) ... [2020-08-19 01:58:10,895 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:58:10" (1/1) ... [2020-08-19 01:58:10,901 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:58:10" (1/1) ... [2020-08-19 01:58:10,902 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:58:10" (1/1) ... [2020-08-19 01:58:10,905 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 01:58:10,905 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 01:58:10,905 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 01:58:10,905 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 01:58:10,906 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:58:10" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:58:10,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 01:58:10,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 01:58:10,968 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 01:58:10,969 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 01:58:10,969 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 01:58:10,969 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 01:58:10,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 01:58:10,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 01:58:11,235 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 01:58:11,235 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-19 01:58:11,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:58:11 BoogieIcfgContainer [2020-08-19 01:58:11,241 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 01:58:11,242 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 01:58:11,242 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 01:58:11,246 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 01:58:11,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 01:58:10" (1/3) ... [2020-08-19 01:58:11,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54e973b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:58:11, skipping insertion in model container [2020-08-19 01:58:11,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:58:10" (2/3) ... [2020-08-19 01:58:11,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54e973b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:58:11, skipping insertion in model container [2020-08-19 01:58:11,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:58:11" (3/3) ... [2020-08-19 01:58:11,250 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_6.c [2020-08-19 01:58:11,261 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 01:58:11,269 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 01:58:11,285 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 01:58:11,355 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 01:58:11,355 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 01:58:11,356 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 01:58:11,356 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 01:58:11,356 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 01:58:11,356 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 01:58:11,356 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 01:58:11,357 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 01:58:11,380 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-08-19 01:58:11,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-19 01:58:11,387 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:58:11,389 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:58:11,389 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:58:11,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:58:11,396 INFO L82 PathProgramCache]: Analyzing trace with hash 429652513, now seen corresponding path program 1 times [2020-08-19 01:58:11,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:58:11,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939689179] [2020-08-19 01:58:11,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:58:11,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:11,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:58:11,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:11,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:58:11,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939689179] [2020-08-19 01:58:11,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:58:11,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:58:11,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135987726] [2020-08-19 01:58:11,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:58:11,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:58:11,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:58:11,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:11,623 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-08-19 01:58:11,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:58:11,707 INFO L93 Difference]: Finished difference Result 63 states and 102 transitions. [2020-08-19 01:58:11,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:58:11,709 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-08-19 01:58:11,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:58:11,723 INFO L225 Difference]: With dead ends: 63 [2020-08-19 01:58:11,724 INFO L226 Difference]: Without dead ends: 48 [2020-08-19 01:58:11,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:11,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-19 01:58:11,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 34. [2020-08-19 01:58:11,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-08-19 01:58:11,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 57 transitions. [2020-08-19 01:58:11,777 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 57 transitions. Word has length 16 [2020-08-19 01:58:11,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:58:11,778 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 57 transitions. [2020-08-19 01:58:11,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:58:11,778 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 57 transitions. [2020-08-19 01:58:11,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-19 01:58:11,779 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:58:11,780 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:58:11,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 01:58:11,781 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:58:11,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:58:11,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1109710883, now seen corresponding path program 1 times [2020-08-19 01:58:11,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:58:11,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2091874954] [2020-08-19 01:58:11,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:58:11,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:11,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:58:11,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:11,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:58:11,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2091874954] [2020-08-19 01:58:11,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:58:11,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:58:11,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766477413] [2020-08-19 01:58:11,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:58:11,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:58:11,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:58:11,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:11,854 INFO L87 Difference]: Start difference. First operand 34 states and 57 transitions. Second operand 3 states. [2020-08-19 01:58:11,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:58:11,883 INFO L93 Difference]: Finished difference Result 77 states and 132 transitions. [2020-08-19 01:58:11,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:58:11,884 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-08-19 01:58:11,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:58:11,886 INFO L225 Difference]: With dead ends: 77 [2020-08-19 01:58:11,886 INFO L226 Difference]: Without dead ends: 48 [2020-08-19 01:58:11,887 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:11,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-19 01:58:11,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2020-08-19 01:58:11,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-08-19 01:58:11,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 77 transitions. [2020-08-19 01:58:11,897 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 77 transitions. Word has length 16 [2020-08-19 01:58:11,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:58:11,898 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 77 transitions. [2020-08-19 01:58:11,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:58:11,898 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 77 transitions. [2020-08-19 01:58:11,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-19 01:58:11,899 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:58:11,899 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:58:11,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 01:58:11,900 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:58:11,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:58:11,901 INFO L82 PathProgramCache]: Analyzing trace with hash 434540691, now seen corresponding path program 1 times [2020-08-19 01:58:11,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:58:11,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1750265085] [2020-08-19 01:58:11,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:58:11,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:11,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:58:11,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:11,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:58:11,954 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1750265085] [2020-08-19 01:58:11,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:58:11,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:58:11,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570664735] [2020-08-19 01:58:11,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:58:11,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:58:11,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:58:11,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:11,957 INFO L87 Difference]: Start difference. First operand 46 states and 77 transitions. Second operand 3 states. [2020-08-19 01:58:11,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:58:11,977 INFO L93 Difference]: Finished difference Result 72 states and 117 transitions. [2020-08-19 01:58:11,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:58:11,978 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-08-19 01:58:11,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:58:11,979 INFO L225 Difference]: With dead ends: 72 [2020-08-19 01:58:11,979 INFO L226 Difference]: Without dead ends: 51 [2020-08-19 01:58:11,980 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:11,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-08-19 01:58:11,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2020-08-19 01:58:11,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-08-19 01:58:11,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 79 transitions. [2020-08-19 01:58:11,990 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 79 transitions. Word has length 17 [2020-08-19 01:58:11,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:58:11,990 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 79 transitions. [2020-08-19 01:58:11,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:58:11,991 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 79 transitions. [2020-08-19 01:58:11,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-19 01:58:11,992 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:58:11,992 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:58:11,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 01:58:11,993 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:58:11,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:58:11,993 INFO L82 PathProgramCache]: Analyzing trace with hash 41513681, now seen corresponding path program 1 times [2020-08-19 01:58:11,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:58:11,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [785188693] [2020-08-19 01:58:11,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:58:12,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:12,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:58:12,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:12,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:58:12,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [785188693] [2020-08-19 01:58:12,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:58:12,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:58:12,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985502844] [2020-08-19 01:58:12,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:58:12,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:58:12,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:58:12,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:12,038 INFO L87 Difference]: Start difference. First operand 49 states and 79 transitions. Second operand 3 states. [2020-08-19 01:58:12,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:58:12,084 INFO L93 Difference]: Finished difference Result 88 states and 144 transitions. [2020-08-19 01:58:12,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:58:12,085 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-08-19 01:58:12,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:58:12,087 INFO L225 Difference]: With dead ends: 88 [2020-08-19 01:58:12,087 INFO L226 Difference]: Without dead ends: 86 [2020-08-19 01:58:12,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:12,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-08-19 01:58:12,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 64. [2020-08-19 01:58:12,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-08-19 01:58:12,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 104 transitions. [2020-08-19 01:58:12,098 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 104 transitions. Word has length 17 [2020-08-19 01:58:12,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:58:12,099 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 104 transitions. [2020-08-19 01:58:12,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:58:12,099 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 104 transitions. [2020-08-19 01:58:12,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-19 01:58:12,100 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:58:12,101 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:58:12,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 01:58:12,101 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:58:12,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:58:12,102 INFO L82 PathProgramCache]: Analyzing trace with hash 721572051, now seen corresponding path program 1 times [2020-08-19 01:58:12,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:58:12,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1395481089] [2020-08-19 01:58:12,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:58:12,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:12,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:58:12,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:12,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:58:12,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1395481089] [2020-08-19 01:58:12,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:58:12,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:58:12,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249921539] [2020-08-19 01:58:12,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:58:12,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:58:12,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:58:12,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:12,138 INFO L87 Difference]: Start difference. First operand 64 states and 104 transitions. Second operand 3 states. [2020-08-19 01:58:12,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:58:12,158 INFO L93 Difference]: Finished difference Result 144 states and 238 transitions. [2020-08-19 01:58:12,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:58:12,159 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-08-19 01:58:12,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:58:12,160 INFO L225 Difference]: With dead ends: 144 [2020-08-19 01:58:12,161 INFO L226 Difference]: Without dead ends: 88 [2020-08-19 01:58:12,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:12,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-08-19 01:58:12,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2020-08-19 01:58:12,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-08-19 01:58:12,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 138 transitions. [2020-08-19 01:58:12,172 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 138 transitions. Word has length 17 [2020-08-19 01:58:12,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:58:12,172 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 138 transitions. [2020-08-19 01:58:12,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:58:12,172 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 138 transitions. [2020-08-19 01:58:12,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 01:58:12,174 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:58:12,174 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:58:12,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 01:58:12,175 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:58:12,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:58:12,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1287139128, now seen corresponding path program 1 times [2020-08-19 01:58:12,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:58:12,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [31238157] [2020-08-19 01:58:12,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:58:12,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:12,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:58:12,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:12,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:58:12,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [31238157] [2020-08-19 01:58:12,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:58:12,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:58:12,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50473720] [2020-08-19 01:58:12,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:58:12,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:58:12,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:58:12,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:12,235 INFO L87 Difference]: Start difference. First operand 86 states and 138 transitions. Second operand 3 states. [2020-08-19 01:58:12,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:58:12,257 INFO L93 Difference]: Finished difference Result 129 states and 205 transitions. [2020-08-19 01:58:12,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:58:12,258 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-08-19 01:58:12,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:58:12,259 INFO L225 Difference]: With dead ends: 129 [2020-08-19 01:58:12,260 INFO L226 Difference]: Without dead ends: 90 [2020-08-19 01:58:12,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:12,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-08-19 01:58:12,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2020-08-19 01:58:12,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-08-19 01:58:12,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 138 transitions. [2020-08-19 01:58:12,270 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 138 transitions. Word has length 18 [2020-08-19 01:58:12,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:58:12,271 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 138 transitions. [2020-08-19 01:58:12,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:58:12,271 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 138 transitions. [2020-08-19 01:58:12,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 01:58:12,272 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:58:12,272 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:58:12,273 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 01:58:12,273 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:58:12,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:58:12,274 INFO L82 PathProgramCache]: Analyzing trace with hash 894112118, now seen corresponding path program 1 times [2020-08-19 01:58:12,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:58:12,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1418282114] [2020-08-19 01:58:12,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:58:12,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:12,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:58:12,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:12,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:58:12,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1418282114] [2020-08-19 01:58:12,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:58:12,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:58:12,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88190316] [2020-08-19 01:58:12,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:58:12,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:58:12,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:58:12,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:12,308 INFO L87 Difference]: Start difference. First operand 88 states and 138 transitions. Second operand 3 states. [2020-08-19 01:58:12,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:58:12,325 INFO L93 Difference]: Finished difference Result 156 states and 248 transitions. [2020-08-19 01:58:12,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:58:12,326 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-08-19 01:58:12,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:58:12,328 INFO L225 Difference]: With dead ends: 156 [2020-08-19 01:58:12,328 INFO L226 Difference]: Without dead ends: 154 [2020-08-19 01:58:12,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:12,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-08-19 01:58:12,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 120. [2020-08-19 01:58:12,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-19 01:58:12,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 186 transitions. [2020-08-19 01:58:12,342 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 186 transitions. Word has length 18 [2020-08-19 01:58:12,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:58:12,343 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 186 transitions. [2020-08-19 01:58:12,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:58:12,343 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 186 transitions. [2020-08-19 01:58:12,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 01:58:12,344 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:58:12,345 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:58:12,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 01:58:12,345 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:58:12,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:58:12,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1574170488, now seen corresponding path program 1 times [2020-08-19 01:58:12,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:58:12,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136376348] [2020-08-19 01:58:12,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:58:12,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:12,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:58:12,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:12,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:58:12,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1136376348] [2020-08-19 01:58:12,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:58:12,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:58:12,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317106430] [2020-08-19 01:58:12,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:58:12,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:58:12,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:58:12,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:12,408 INFO L87 Difference]: Start difference. First operand 120 states and 186 transitions. Second operand 3 states. [2020-08-19 01:58:12,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:58:12,433 INFO L93 Difference]: Finished difference Result 272 states and 424 transitions. [2020-08-19 01:58:12,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:58:12,433 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-08-19 01:58:12,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:58:12,435 INFO L225 Difference]: With dead ends: 272 [2020-08-19 01:58:12,435 INFO L226 Difference]: Without dead ends: 162 [2020-08-19 01:58:12,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:12,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-08-19 01:58:12,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 160. [2020-08-19 01:58:12,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-08-19 01:58:12,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 242 transitions. [2020-08-19 01:58:12,450 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 242 transitions. Word has length 18 [2020-08-19 01:58:12,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:58:12,450 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 242 transitions. [2020-08-19 01:58:12,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:58:12,451 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 242 transitions. [2020-08-19 01:58:12,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 01:58:12,452 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:58:12,452 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:58:12,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 01:58:12,453 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:58:12,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:58:12,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1947887240, now seen corresponding path program 1 times [2020-08-19 01:58:12,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:58:12,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1454137345] [2020-08-19 01:58:12,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:58:12,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:12,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:58:12,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:12,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:58:12,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1454137345] [2020-08-19 01:58:12,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:58:12,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:58:12,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358274645] [2020-08-19 01:58:12,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:58:12,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:58:12,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:58:12,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:12,480 INFO L87 Difference]: Start difference. First operand 160 states and 242 transitions. Second operand 3 states. [2020-08-19 01:58:12,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:58:12,497 INFO L93 Difference]: Finished difference Result 240 states and 360 transitions. [2020-08-19 01:58:12,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:58:12,498 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-19 01:58:12,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:58:12,499 INFO L225 Difference]: With dead ends: 240 [2020-08-19 01:58:12,500 INFO L226 Difference]: Without dead ends: 166 [2020-08-19 01:58:12,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:12,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-19 01:58:12,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 164. [2020-08-19 01:58:12,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-08-19 01:58:12,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 242 transitions. [2020-08-19 01:58:12,513 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 242 transitions. Word has length 19 [2020-08-19 01:58:12,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:58:12,513 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 242 transitions. [2020-08-19 01:58:12,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:58:12,513 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 242 transitions. [2020-08-19 01:58:12,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 01:58:12,515 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:58:12,515 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:58:12,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 01:58:12,515 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:58:12,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:58:12,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1554860230, now seen corresponding path program 1 times [2020-08-19 01:58:12,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:58:12,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052039657] [2020-08-19 01:58:12,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:58:12,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:12,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:58:12,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:12,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:58:12,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2052039657] [2020-08-19 01:58:12,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:58:12,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:58:12,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383833266] [2020-08-19 01:58:12,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:58:12,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:58:12,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:58:12,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:12,547 INFO L87 Difference]: Start difference. First operand 164 states and 242 transitions. Second operand 3 states. [2020-08-19 01:58:12,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:58:12,569 INFO L93 Difference]: Finished difference Result 284 states and 424 transitions. [2020-08-19 01:58:12,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:58:12,569 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-19 01:58:12,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:58:12,571 INFO L225 Difference]: With dead ends: 284 [2020-08-19 01:58:12,571 INFO L226 Difference]: Without dead ends: 282 [2020-08-19 01:58:12,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:12,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-08-19 01:58:12,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 232. [2020-08-19 01:58:12,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-08-19 01:58:12,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 334 transitions. [2020-08-19 01:58:12,585 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 334 transitions. Word has length 19 [2020-08-19 01:58:12,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:58:12,585 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 334 transitions. [2020-08-19 01:58:12,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:58:12,585 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 334 transitions. [2020-08-19 01:58:12,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 01:58:12,587 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:58:12,587 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:58:12,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 01:58:12,588 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:58:12,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:58:12,588 INFO L82 PathProgramCache]: Analyzing trace with hash -2060048696, now seen corresponding path program 1 times [2020-08-19 01:58:12,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:58:12,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [291727440] [2020-08-19 01:58:12,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:58:12,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:12,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:58:12,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:12,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:58:12,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [291727440] [2020-08-19 01:58:12,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:58:12,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:58:12,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540858881] [2020-08-19 01:58:12,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:58:12,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:58:12,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:58:12,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:12,613 INFO L87 Difference]: Start difference. First operand 232 states and 334 transitions. Second operand 3 states. [2020-08-19 01:58:12,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:58:12,647 INFO L93 Difference]: Finished difference Result 524 states and 752 transitions. [2020-08-19 01:58:12,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:58:12,650 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-19 01:58:12,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:58:12,652 INFO L225 Difference]: With dead ends: 524 [2020-08-19 01:58:12,652 INFO L226 Difference]: Without dead ends: 306 [2020-08-19 01:58:12,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:12,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-08-19 01:58:12,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 304. [2020-08-19 01:58:12,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-08-19 01:58:12,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 422 transitions. [2020-08-19 01:58:12,667 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 422 transitions. Word has length 19 [2020-08-19 01:58:12,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:58:12,667 INFO L479 AbstractCegarLoop]: Abstraction has 304 states and 422 transitions. [2020-08-19 01:58:12,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:58:12,667 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 422 transitions. [2020-08-19 01:58:12,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-19 01:58:12,669 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:58:12,669 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:58:12,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 01:58:12,670 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:58:12,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:58:12,670 INFO L82 PathProgramCache]: Analyzing trace with hash 956242573, now seen corresponding path program 1 times [2020-08-19 01:58:12,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:58:12,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911945485] [2020-08-19 01:58:12,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:58:12,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:12,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:58:12,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:12,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:58:12,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911945485] [2020-08-19 01:58:12,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:58:12,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:58:12,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898071791] [2020-08-19 01:58:12,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:58:12,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:58:12,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:58:12,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:12,705 INFO L87 Difference]: Start difference. First operand 304 states and 422 transitions. Second operand 3 states. [2020-08-19 01:58:12,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:58:12,724 INFO L93 Difference]: Finished difference Result 456 states and 628 transitions. [2020-08-19 01:58:12,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:58:12,724 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-08-19 01:58:12,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:58:12,727 INFO L225 Difference]: With dead ends: 456 [2020-08-19 01:58:12,727 INFO L226 Difference]: Without dead ends: 314 [2020-08-19 01:58:12,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:12,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-08-19 01:58:12,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 312. [2020-08-19 01:58:12,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-08-19 01:58:12,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 422 transitions. [2020-08-19 01:58:12,740 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 422 transitions. Word has length 20 [2020-08-19 01:58:12,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:58:12,740 INFO L479 AbstractCegarLoop]: Abstraction has 312 states and 422 transitions. [2020-08-19 01:58:12,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:58:12,740 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 422 transitions. [2020-08-19 01:58:12,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-19 01:58:12,741 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:58:12,742 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:58:12,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 01:58:12,742 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:58:12,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:58:12,743 INFO L82 PathProgramCache]: Analyzing trace with hash 563215563, now seen corresponding path program 1 times [2020-08-19 01:58:12,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:58:12,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905799488] [2020-08-19 01:58:12,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:58:12,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:12,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:58:12,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:12,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:58:12,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905799488] [2020-08-19 01:58:12,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:58:12,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:58:12,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366039055] [2020-08-19 01:58:12,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:58:12,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:58:12,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:58:12,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:12,766 INFO L87 Difference]: Start difference. First operand 312 states and 422 transitions. Second operand 3 states. [2020-08-19 01:58:12,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:58:12,787 INFO L93 Difference]: Finished difference Result 524 states and 712 transitions. [2020-08-19 01:58:12,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:58:12,788 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-08-19 01:58:12,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:58:12,791 INFO L225 Difference]: With dead ends: 524 [2020-08-19 01:58:12,791 INFO L226 Difference]: Without dead ends: 522 [2020-08-19 01:58:12,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:12,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2020-08-19 01:58:12,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 456. [2020-08-19 01:58:12,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 456 states. [2020-08-19 01:58:12,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 598 transitions. [2020-08-19 01:58:12,807 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 598 transitions. Word has length 20 [2020-08-19 01:58:12,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:58:12,807 INFO L479 AbstractCegarLoop]: Abstraction has 456 states and 598 transitions. [2020-08-19 01:58:12,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:58:12,808 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 598 transitions. [2020-08-19 01:58:12,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-19 01:58:12,809 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:58:12,809 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:58:12,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-19 01:58:12,810 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:58:12,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:58:12,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1243273933, now seen corresponding path program 1 times [2020-08-19 01:58:12,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:58:12,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1405596227] [2020-08-19 01:58:12,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:58:12,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:12,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:58:12,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:12,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:58:12,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1405596227] [2020-08-19 01:58:12,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:58:12,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:58:12,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300027277] [2020-08-19 01:58:12,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:58:12,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:58:12,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:58:12,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:12,834 INFO L87 Difference]: Start difference. First operand 456 states and 598 transitions. Second operand 3 states. [2020-08-19 01:58:12,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:58:12,858 INFO L93 Difference]: Finished difference Result 1020 states and 1320 transitions. [2020-08-19 01:58:12,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:58:12,859 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-08-19 01:58:12,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:58:12,862 INFO L225 Difference]: With dead ends: 1020 [2020-08-19 01:58:12,862 INFO L226 Difference]: Without dead ends: 586 [2020-08-19 01:58:12,864 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:12,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2020-08-19 01:58:12,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 584. [2020-08-19 01:58:12,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 584 states. [2020-08-19 01:58:12,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 726 transitions. [2020-08-19 01:58:12,884 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 726 transitions. Word has length 20 [2020-08-19 01:58:12,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:58:12,884 INFO L479 AbstractCegarLoop]: Abstraction has 584 states and 726 transitions. [2020-08-19 01:58:12,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:58:12,884 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 726 transitions. [2020-08-19 01:58:12,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-19 01:58:12,885 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:58:12,886 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:58:12,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-19 01:58:12,886 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:58:12,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:58:12,886 INFO L82 PathProgramCache]: Analyzing trace with hash 280029309, now seen corresponding path program 1 times [2020-08-19 01:58:12,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:58:12,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1867815106] [2020-08-19 01:58:12,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:58:12,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:12,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:58:12,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:12,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:58:12,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1867815106] [2020-08-19 01:58:12,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:58:12,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:58:12,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732729879] [2020-08-19 01:58:12,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:58:12,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:58:12,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:58:12,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:12,908 INFO L87 Difference]: Start difference. First operand 584 states and 726 transitions. Second operand 3 states. [2020-08-19 01:58:12,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:58:12,930 INFO L93 Difference]: Finished difference Result 876 states and 1080 transitions. [2020-08-19 01:58:12,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:58:12,930 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-08-19 01:58:12,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:58:12,933 INFO L225 Difference]: With dead ends: 876 [2020-08-19 01:58:12,933 INFO L226 Difference]: Without dead ends: 602 [2020-08-19 01:58:12,934 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:12,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2020-08-19 01:58:12,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 600. [2020-08-19 01:58:12,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 600 states. [2020-08-19 01:58:12,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 726 transitions. [2020-08-19 01:58:12,954 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 726 transitions. Word has length 21 [2020-08-19 01:58:12,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:58:12,954 INFO L479 AbstractCegarLoop]: Abstraction has 600 states and 726 transitions. [2020-08-19 01:58:12,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:58:12,955 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 726 transitions. [2020-08-19 01:58:12,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-19 01:58:12,956 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:58:12,956 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:58:12,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-19 01:58:12,957 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:58:12,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:58:12,957 INFO L82 PathProgramCache]: Analyzing trace with hash -112997701, now seen corresponding path program 1 times [2020-08-19 01:58:12,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:58:12,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [863917330] [2020-08-19 01:58:12,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:58:12,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:12,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:58:12,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:12,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:58:12,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [863917330] [2020-08-19 01:58:12,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:58:12,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:58:12,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412689836] [2020-08-19 01:58:12,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:58:12,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:58:12,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:58:12,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:12,988 INFO L87 Difference]: Start difference. First operand 600 states and 726 transitions. Second operand 3 states. [2020-08-19 01:58:13,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:58:13,022 INFO L93 Difference]: Finished difference Result 970 states and 1159 transitions. [2020-08-19 01:58:13,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:58:13,022 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-08-19 01:58:13,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:58:13,027 INFO L225 Difference]: With dead ends: 970 [2020-08-19 01:58:13,027 INFO L226 Difference]: Without dead ends: 968 [2020-08-19 01:58:13,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:13,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2020-08-19 01:58:13,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 904. [2020-08-19 01:58:13,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 904 states. [2020-08-19 01:58:13,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1062 transitions. [2020-08-19 01:58:13,061 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1062 transitions. Word has length 21 [2020-08-19 01:58:13,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:58:13,061 INFO L479 AbstractCegarLoop]: Abstraction has 904 states and 1062 transitions. [2020-08-19 01:58:13,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:58:13,062 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1062 transitions. [2020-08-19 01:58:13,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-19 01:58:13,063 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:58:13,063 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:58:13,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-19 01:58:13,064 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:58:13,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:58:13,064 INFO L82 PathProgramCache]: Analyzing trace with hash 567060669, now seen corresponding path program 1 times [2020-08-19 01:58:13,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:58:13,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [568374181] [2020-08-19 01:58:13,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:58:13,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:13,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:58:13,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:13,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:58:13,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [568374181] [2020-08-19 01:58:13,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:58:13,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:58:13,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599705814] [2020-08-19 01:58:13,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:58:13,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:58:13,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:58:13,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:13,092 INFO L87 Difference]: Start difference. First operand 904 states and 1062 transitions. Second operand 3 states. [2020-08-19 01:58:13,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:58:13,144 INFO L93 Difference]: Finished difference Result 1992 states and 2278 transitions. [2020-08-19 01:58:13,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:58:13,144 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-08-19 01:58:13,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:58:13,145 INFO L225 Difference]: With dead ends: 1992 [2020-08-19 01:58:13,145 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 01:58:13,148 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:58:13,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 01:58:13,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 01:58:13,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 01:58:13,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 01:58:13,149 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-08-19 01:58:13,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:58:13,149 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 01:58:13,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:58:13,149 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 01:58:13,149 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 01:58:13,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-19 01:58:13,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 01:58:13,172 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-19 01:58:13,173 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-19 01:58:13,173 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-19 01:58:13,173 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-19 01:58:13,173 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-19 01:58:13,173 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-19 01:58:13,173 INFO L268 CegarLoopResult]: For program point L93(line 93) no Hoare annotation was computed. [2020-08-19 01:58:13,173 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 107) no Hoare annotation was computed. [2020-08-19 01:58:13,173 INFO L268 CegarLoopResult]: For program point L77-1(lines 27 102) no Hoare annotation was computed. [2020-08-19 01:58:13,174 INFO L268 CegarLoopResult]: For program point L78(line 78) no Hoare annotation was computed. [2020-08-19 01:58:13,174 INFO L271 CegarLoopResult]: At program point L103(lines 5 107) the Hoare annotation is: true [2020-08-19 01:58:13,174 INFO L268 CegarLoopResult]: For program point L29(lines 29 31) no Hoare annotation was computed. [2020-08-19 01:58:13,174 INFO L268 CegarLoopResult]: For program point L62-1(lines 27 102) no Hoare annotation was computed. [2020-08-19 01:58:13,174 INFO L268 CegarLoopResult]: For program point L87-1(lines 27 102) no Hoare annotation was computed. [2020-08-19 01:58:13,174 INFO L268 CegarLoopResult]: For program point L54-1(lines 27 102) no Hoare annotation was computed. [2020-08-19 01:58:13,174 INFO L268 CegarLoopResult]: For program point L46(lines 46 48) no Hoare annotation was computed. [2020-08-19 01:58:13,174 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 107) no Hoare annotation was computed. [2020-08-19 01:58:13,175 INFO L268 CegarLoopResult]: For program point L46-2(lines 27 102) no Hoare annotation was computed. [2020-08-19 01:58:13,175 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 105) no Hoare annotation was computed. [2020-08-19 01:58:13,175 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 107) the Hoare annotation is: true [2020-08-19 01:58:13,175 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-08-19 01:58:13,175 INFO L268 CegarLoopResult]: For program point L72-1(lines 27 102) no Hoare annotation was computed. [2020-08-19 01:58:13,175 INFO L271 CegarLoopResult]: At program point L97-1(lines 27 102) the Hoare annotation is: true [2020-08-19 01:58:13,175 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-08-19 01:58:13,176 INFO L268 CegarLoopResult]: For program point L98(line 98) no Hoare annotation was computed. [2020-08-19 01:58:13,176 INFO L264 CegarLoopResult]: At program point L98-1(lines 5 107) the Hoare annotation is: false [2020-08-19 01:58:13,176 INFO L268 CegarLoopResult]: For program point L82-1(lines 27 102) no Hoare annotation was computed. [2020-08-19 01:58:13,176 INFO L268 CegarLoopResult]: For program point L66-1(lines 27 102) no Hoare annotation was computed. [2020-08-19 01:58:13,176 INFO L268 CegarLoopResult]: For program point L58-1(lines 27 102) no Hoare annotation was computed. [2020-08-19 01:58:13,176 INFO L268 CegarLoopResult]: For program point L83(line 83) no Hoare annotation was computed. [2020-08-19 01:58:13,176 INFO L268 CegarLoopResult]: For program point L50-1(lines 27 102) no Hoare annotation was computed. [2020-08-19 01:58:13,177 INFO L268 CegarLoopResult]: For program point L92-1(lines 27 102) no Hoare annotation was computed. [2020-08-19 01:58:13,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 01:58:13 BoogieIcfgContainer [2020-08-19 01:58:13,188 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 01:58:13,191 INFO L168 Benchmark]: Toolchain (without parser) took 2668.91 ms. Allocated memory was 141.0 MB in the beginning and 243.3 MB in the end (delta: 102.2 MB). Free memory was 103.9 MB in the beginning and 207.0 MB in the end (delta: -103.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 01:58:13,192 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 01:58:13,193 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.04 ms. Allocated memory is still 141.0 MB. Free memory was 103.7 MB in the beginning and 93.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-08-19 01:58:13,194 INFO L168 Benchmark]: Boogie Preprocessor took 117.80 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 93.1 MB in the beginning and 182.0 MB in the end (delta: -88.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-08-19 01:58:13,195 INFO L168 Benchmark]: RCFGBuilder took 335.56 ms. Allocated memory is still 203.9 MB. Free memory was 182.0 MB in the beginning and 166.7 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. [2020-08-19 01:58:13,195 INFO L168 Benchmark]: TraceAbstraction took 1946.39 ms. Allocated memory was 203.9 MB in the beginning and 243.3 MB in the end (delta: 39.3 MB). Free memory was 166.1 MB in the beginning and 207.0 MB in the end (delta: -40.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 01:58:13,199 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 264.04 ms. Allocated memory is still 141.0 MB. Free memory was 103.7 MB in the beginning and 93.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.80 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 93.1 MB in the beginning and 182.0 MB in the end (delta: -88.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 335.56 ms. Allocated memory is still 203.9 MB. Free memory was 182.0 MB in the beginning and 166.7 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1946.39 ms. Allocated memory was 203.9 MB in the beginning and 243.3 MB in the end (delta: 39.3 MB). Free memory was 166.1 MB in the beginning and 207.0 MB in the end (delta: -40.9 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 105]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.8s, OverallIterations: 17, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 923 SDtfs, 417 SDslu, 612 SDs, 0 SdLazy, 91 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=904occurred in iteration=16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 17 MinimizatonAttempts, 270 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 74 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 317 NumberOfCodeBlocks, 317 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 300 ConstructedInterpolants, 0 QuantifiedInterpolants, 9690 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 17 InterpolantComputations, 17 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...